Skip to Main content Skip to Navigation
Journal articles

Effects of a turbulent wall jet on heat transfer over a non-confined backward-facing step

Abstract : Experimental and numerical analysis of a turbulent wall jet on the heat transfer downstream of a non-confined backward-facing step are presented. Several configurations are studied to analyse the influence of the upstream flow and the height of the step. An infrared camera and a hot wire were used to visualize a temperature map and measure the instantaneous velocity, respectively. The main objective was to visualize and compare both the fluid flow and the heat transfer, by studying the skin friction coefficient Cf and the Nusselt number Nud, respectively. The latter is obtained by the calculation of the heat transfer coefficient, evaluated by inverse method. Both experimental data and numerical approach provide good agreement regarding the flow structure and thermal data for measuring the position and the value of characteristics scales in the recirculation zone. A correlation between the maximum heat transfer Numax and the maximum Reynolds number Remax is presented. Similarities and differences are highlighted in the paper compared to confined configurations
Document type :
Journal articles
Complete list of metadata

https://hal-uphf.archives-ouvertes.fr/hal-03623110
Contributor : Mylène Delrue Connect in order to contact the contributor
Submitted on : Tuesday, March 29, 2022 - 2:42:33 PM
Last modification on : Wednesday, March 30, 2022 - 4:00:00 AM

Identifiers

Collections

Citation

Nicolas Lancial, François Beaubert, Souad Harmand, G. Rolland. Effects of a turbulent wall jet on heat transfer over a non-confined backward-facing step. International Journal of Heat and Fluid Flow, Elsevier, 2013, 44, pp.336-347. ⟨10.1016/j.ijheatfluidflow.2013.07.003⟩. ⟨hal-03623110⟩

Share

Metrics

Record views

11